653680499 has 2 divisors, whose sum is σ = 653680500. Its totient is φ = 653680498.

The previous prime is 653680463. The next prime is 653680513. The reversal of 653680499 is 994086356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 653680499 - 2¹² = 653676403 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (653680459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326840249 + 326840250.

It is an arithmetic number, because the mean of its divisors is an integer number (326840250).

Almost surely, 2^653680499 is an apocalyptic number.

653680499 is a deficient number, since it is larger than the sum of its proper divisors (1).

653680499 is an equidigital number, since it uses as much as digits as its factorization.

653680499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The square root of 653680499 is about 25567.1762030929. The cubic root of 653680499 is about 867.8709994499.

The spelling of 653680499 in words is "six hundred fifty-three million, six hundred eighty thousand, four hundred ninety-nine".